Alexander walker



(No Model.) 2 Sheets-Shet 1 A. WALKER.

HEATING APPARATUS. No. 375,662. Patented Dec. 27, 1887.

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(No Model.) 2 Sheets-Sheet 2.

A. WALKER.

HEATING APPARATUS. No. 375,662. Patented Dec. 27, 1887.

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JP h J E 1 l I if A fwen 04/ MM, 4 kkw UNITED STATES PATENT OFFICE,

ALEXANDER WALKER, OF MONTREAL, QUEBEC, CANADA.

H EATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 375,662, dated December27, 1887.

Application filed July 6, 1886, Renewed September 10, 1887. Serial No.249,380.

To aZZ whom it may concern:

Be it known that I, ALEXANDER WALKER, of the city of Montreal, in thedistrict of Montreal and Province of Quebec," Canada, have inventedcertain new and useful Improvements in Heating Apparatus; and I dohereby declare that the following is a full, clear, and exactdescription of the same.

My invention has reference to that class of heating apparatus in whichcoal-oil or gas is used as the heat-generator, and which are employedinseparate rooms independently of the system of heating in any building,and it is specially applicable in cases where there is nochimney-outlet.

Theinvention may be described as consisting in the addition to a coilsuch as is commonly used in heating systems of a supplementary coilconnected to same by feed and return pipes, a heater for suchsupplementary coil, an expansion-tank, into which water is fed,connected with main coil, and apipe through which products of combustionare taken from firechamber into said tank above water space, the wholebeing mounted on a movable stand, so as to be portable.

For full comprehension of the invention reference must be had to theannexed drawings, in which Figure 1 shows a side View, partly brokenaway, of the appartus; and Figs. 2 and 3, respectively, longitudinal andtransverse vertical sectional details enlarged of expansion-tank.

A is an ordinary coil of pipes carried in standards B B, secured to theplate or stand 0, running on casters or.wheels c c.

A A are the terminal pipes of the coil, A being connected to a pipe, Acommunicating with a coil, D, arranged within a chamber, E, over whichis placed an outer chamber, E, leaving between E and E a water-jacket,e, and forming at its lower end a stand for the heater F, to bepresently described. A pipe, A*, taken from the coil 1) or water-jackete, connects it with the main pipe A, thus completing the circulation.

(No model.)

The heating medium may be a Bunsen or atmospheric burner connected withany source of gas-supply, or, where gas is wanting, an oil-lamp ofsufficient heating-power.

H is an expansion-tank set above and extending the full length of thecoil A, H being a cover,Vshaped, so as to leave a space above thesurface of the water contained in it, this cover being somewhat shorterthan H, so as to leave an opening, 71 The other end of this tank H isconnected by a pipe, K, with the inside of the chamber E, and a pipe, L,also connects it with the pipe A An air-tube, M, is inserted in the topof pipe A and has its other end let into cover H of tank H.

The operation or working of the apparatus is as follows: The coils A andD are filled through the opening 72, tank H, and pipe L,

' and the burner F being lighted the waterin D is heated, starting thecirculation, passing otf by pipes A and A and returning by pipes A and AThe products of combustion pass from the chamber- E through the pipe Kinto the space between the waterin H and the under side of the cover H,and, the water being heated, these products of combustion will bepurified, and if not wholly taken up by the water will pass oif asvapor.

Having thus described my invention, I beg to state that what I claim isas follows:

The combination, with a hot-water-circulation coil, of a supplementarycoil connected to same by feed and return pipes, a heater for suchsupplementary coil, an expansion-tank into which water is fed, a pipeconnecting said tank with main coil, and a pipe through which productsof combustion are taken from firechamber into said tank abovewater-space, the whole being mounted on a movable stand, all as hereinset forth, and for the purposes described.

ALEXANDER I Vitnesses:

OWEN W. Evans, W. MoFEAr.

